If her 2004 debut The Milk-Eyed Mender was a dipped toe, and her 2006 follow-up Ys a waist-deep wade, then Joanna Newsom’s latest album Have One On Me is a full-body plunge. “It wasn’t something I had a lot of power over,” says the harpist and singer of the way the project evolved into a triple-disc affair. When she sat down to write, it simply opened up a world of love and heartbreak that went on and on. Out of that process came a precious song cycle that is this year’s antidote to everything ephemeral in music. Newsom’s vibrato-soaked soprano and nimble hands follow her own mythology through a varied set of long rhapsodies and short ditties that visit the outdoors and the inner soul with equal ardor.